source: azure_iot_hub/trunk/musl-1.1.18/src/ipc/semctl.c@ 389

Last change on this file since 389 was 389, checked in by coas-nagasima, 5 years ago

ビルドが通るよう更新
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File size: 605 bytes
Line 
1#include <sys/sem.h>
2#include <stdarg.h>
3#include "syscall.h"
4#include "ipc.h"
5
6union semun {
7 int val;
8 struct semid_ds *buf;
9 unsigned short *array;
10};
11
12int semctl(int id, int num, int cmd, ...)
13{
14 union semun arg = {0};
15 va_list ap;
16 switch (cmd) {
17 case SETVAL: case GETALL: case SETALL: case IPC_STAT: case IPC_SET:
18 case IPC_INFO: case SEM_INFO: case SEM_STAT:
19 va_start(ap, cmd);
20 arg = va_arg(ap, union semun);
21 va_end(ap);
22 }
23#ifdef SYS_semctl
24 return syscall(SYS_semctl, id, num, cmd | IPC_64, arg.buf);
25#else
26 return syscall(SYS_ipc, IPCOP_semctl, id, num, cmd | IPC_64, &arg.buf);
27#endif
28}
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